14．They have made so great progress A．three years ago B．for three yearsC．in the past three years D．before three years 【查看更多】

 

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They have made so great progress      .

                A. three years ago                                             B. for three years

                C. in the past three years                                D. before three years

 

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They have made so great progress      .

                A. three years ago                                             B. for three years

                C. in the past three years                                D. before three years

 

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They have made so great progress      .

A．three years agoB．for three years
C．in the past three yearsD．before three years

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They have made so great progress            .
[     ]
A. three years ago
B. for three years
C. in the past three years
D. before three years

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They have made so great progress      


  1. A.
    three years ago
  2. B.
    for three years
  3. C.
    in the past three years
  4. D.
    before three years

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